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Lecture 6, Term 3 - 2007 1
COD12 COD12 COMPUTER COMPUTER LITERACYLITERACY
COD12 COD12 COMPUTER COMPUTER LITERACYLITERACY
Communication and Communication and ConnectivityConnectivity
Lecture 6, Term 3 - 2007 2
Internet • Is a collection of local, regional,
national and international computer networks that is linked together to exchange data and distribute processing tasks.
• Data stored in one computer is therefore accessible by another computer
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Modem A device that sends and receives data to and from computers over telephone lines.
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Resources provided by the Internet
• Web sitesVarious locations in the cyberspace that corresponds to a corporations, a store, a magazine and more.
• Search EngineHelp catalog a huge portion of the data stored on servers that are connected to the Internet.
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Resources provided by the Internet
• Downloading and uploading• Email- electronic messages• Bulletin boards – discussion groups• Blogs
Refers to a personal journal posted on the Web for access by the general public.
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Resources provided by the Internet
• E-commerceOnline activities such as banking and shopping.
• Chat groups and instant messaging• Broadcasting
Multicasting technology can reach al over the world.
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Resources provided by the Internet
• Internet telephonyTelephone-style conversations to travel over the Internet to virtually anywhere in the world.
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Uses of Internet• Business
AdvertisingProvide access to databaseSelling/buyingDistributing productsProvide after-sales serviceVoice and video conferencing and other
forms of communication
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Uses of Internet• Media and Entertainment
companiesBroadcast live radio and television
programs. (including audio and video)
Offer on-line chat
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Uses of Internet• Scientists and scholars
CommunicatePerform researchDistribute lecture notes and course
materials to students.Publish papers and articles
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Uses of Internet• Individual
CommunicationEntertainmentFinding
informationBuying and selling
of goods and services
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Electronic Mail• E-mail is the transmission of
messages and files via a computer network.
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What is an e-mail message
• Is a document that is composed on a computer and remains in digital form so that it can be transmitted to another computer
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Who can use Internet?
• Any person with an e-mail account.
• An e-mail account provides the rights to a storage area or “mailbox”
• Each mailbox has a unique address.
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What is an E-mail system?
An e-mail system is the equipment and software that carries and manipulates e-mail messages.
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Internet AddressesCode Explanationedu Educational facilitycom Commercial organisationgov Non-military government body
mil Military concernorg Other organisationnet Network resourcesac Academic institutionau Australiain Indiaus United States of Americauk United Kingdomfj Fiji Islands
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